--- id: 612eb7ca8c275d5f89c73333 title: Step 24 challengeType: 0 dashedName: step-24 --- # --description-- To smooth the sharp edges of the piano and keys, start by giving the `#piano` a `border-radius` of `10px`. # --hints-- Your `#piano` selector should have a `border-radius` property set to `10px`. ```js assert(new __helpers.CSSHelp(document).getStyle('#piano')?.borderRadius === '10px'); ``` # --seed-- ## --seed-contents-- ```html Piano
``` ```css html { box-sizing: border-box; } *, *::before, *::after { box-sizing: inherit; } --fcc-editable-region-- #piano { background-color: #00471b; width: 992px; height: 290px; margin: 80px auto; padding: 90px 20px 0 20px; position: relative; } --fcc-editable-region-- .keys { background-color: #040404; width: 949px; height: 180px; padding-left: 2px; } .key { background-color: #ffffff; position: relative; width: 41px; height: 175px; margin: 2px; float: left; } .key.black--key::after { background-color: #1d1e22; content: ""; position: absolute; left: -18px; width: 32px; height: 100px; } .logo { width: 200px; position: absolute; top: 23px; } ```